Trump has already imposed 50% Section 338 tariffs on targeted Canadian imports in motor vehicles, dairy, and alcoholic beverages effective August 22, 2026, citing discrimination against U.S. commerce, with product list modifications and import bans announced in September. Canada responded with matching retaliatory tariffs on roughly $20 billion of U.S. goods starting September 8. As of early October, Trump publicly accused Canada of secret tariffs and threatened further 50% duties on autos, trucks, parts, and steel beginning January 2027. These moves occur against the USMCA backdrop, stalled bilateral talks, and the approach of U.S. midterms, shaping trader views on the likelihood and timing of additional announcements.